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Finding the Fourth Proportional to 99,161.88, 136,843.39 and 54,449.88

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Solution

The fourth proportional to 99,161.88, 136,843.39 and 54,449.88 is: 75,140.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,161.88 : 136,843.39 = 54,449.88 : x
  2. Step 2: Convert to fraction form
    99,161.88/136,843.39 = 54,449.88/x
  3. Step 3: Cross multiply
    99,161.88x = 136,843.39 × 54,449.88
  4. Step 4: Simplify right side
    99,161.88x = 7,451,106,164.29
  5. Step 5: Solve for x
    x = 7,451,106,164.29/99,161.88
  6. Step 6: Final answer
    x = 75,140.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.